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bashvm.sh
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#!/bin/bash
#
#bashvm.com
#
#Author: Kyle Schroeder "BabyWhale"
while true; do
# Display the main menu
echo -e "\n============================ Main Menu ============================"
echo " 1. Virtual Machines 2. Storage Pools 3. Networks"
echo " 4. Snapshots 5. Edit Properties 6. Firewall Settings"
echo " 7. Port Forwarding 8. VNC / Console Access 9. System Monitor"
echo "10. VM Monitor q. Exit"
echo ""
# Prompt user for input
read -ep "Enter your choice: " main_choice
case $main_choice in
1)
# Virtual Machines Menu
while true; do
echo -e "\n============================== Manage Virtual Machine =============================="
echo " s. Show all virtual machines 1. Show more details of a VM 2. Start a VM"
echo " 3. Reboot a VM 4. Shutdown a VM (graceful) 5. Shutdown a VM (force)"
echo " 6. Enable autostart of a VM 7. Disable autostart of a VM 8. Create a new / existing VM"
echo " 9. Undefine a VM 10. Create a new VM (Automated) 11. Console into a VM"
echo "12. Change resources of a VM 13. Delete a VM 14. Clone a VM"
echo "15. Rename a VM q. Back to main menu"
echo ""
read -ep "Enter your choice: " vm_manage_choice
case $vm_manage_choice in
s)
# Show all virtual machines
virsh list --all
;;
1)
# Show details of a virtual machine
read -ep "Enter the VM name: " vm_name
virsh dominfo "$vm_name"
virsh domblkinfo "$vm_name" --all --human
;;
2)
# Start a virtual machine
read -ep "Enter the name of the virtual machine to start: " vm_name
virsh start "$vm_name"
;;
3)
# Reboot a VM
read -ep "Enter the name of the virtual machine to restart: " vm_name
virsh reboot "$vm_name"
;;
4)
# Shutdown a VM (graceful)
read -ep "Enter the name of the virtual machine to shutdown: " vm_name
virsh shutdown "$vm_name"
;;
5)
# Shutdown a VM (force)
read -ep "Enter the name of the virtual machine to force shutdown: " vm_name
virsh destroy "$vm_name"
;;
6)
# Enable autostart
read -ep "Enter the name of the virtual machine to autostart on boot: " vm_name
virsh autostart "$vm_name"
;;
7)
# Disable autostart
read -ep "Enter the name of the virtual machine to disable autostart on boot: " vm_name
virsh autostart --disable "$vm_name"
;;
8)
# Create a new VM
bash bashvm-create-vm.sh
;;
9)
# Undefine a virtual machine
read -ep "Enter the name of the virtual machine to undefine: " vm_name
vm_state=$(virsh list --all | grep "$vm_name" | awk '{print $3}')
if [ "$vm_state" == "running" ];then
echo "Please shutdown the vm before running this again"
break
fi
virsh destroy "$vm_name" > /dev/null 2>&1
virsh undefine "$vm_name"
;;
10)
# Create a VM (Automated)
bash bashvm-create-auto-vm.sh
;;
11)
# Console into a VM
read -ep "Enter the VM name to console into: " hostname
virsh console "$hostname"
;;
12)
# Change resources of a VM
bash bashvm-change-resources.sh
;;
13)
# Delete a VM
bash bashvm-delete-vm.sh
;;
14)
# Clone a VM
read -ep "Enter the name of the vm to clone (e.g., test-vm): " vm_name
read -ep "Enter the amount of clones of this vm to create (e.g., 1): " clone_num
counter=1
while [ "$counter" -le "$clone_num" ]
do
virt-clone --original "$vm_name" --auto-clone
((counter++))
done
;;
15)
# Rename a VM
read -ep "Enter the name of the virtual machine: " vm_name
read -ep "Enter the new name of the virtual machine: " vm_name_new
virsh domrename "$vm_name" "$vm_name_new"
;;
q)
# Back to Menu
break
;;
*)
echo "Invalid choice. Please enter a valid option."
;;
esac
done
;;
2)
# Storage Pools Menu
while true; do
echo -e "\n============================== Manage Storage Pool =============================="
echo "s. Show all storage pools 1. Show all volumes in a pool 2. Activate a storage pool"
echo "3. Deactivate a storage pool 4. Create a storage pool 5. Delete a storage pool"
echo "6. Create a storage volume 7. Delete a storage volume 8. Clone a storage volume"
echo "q. Back to main menu"
echo ""
read -ep "Enter your choice: " storage_manage_choice
case $storage_manage_choice in
s)
# Show all pools
virsh pool-list --details
;;
1)
#Show all volumes in a pool
read -ep "Enter the name of the storage pool [default]: " pool_name
if [ -z "$pool_name" ]; then
pool_name="default"
fi
virsh vol-list --pool "$pool_name"
;;
2)
# Activate a storage pool
read -ep "Enter the name of the storage pool to activate [default]: " pool_name
if [ -z "$pool_name" ]; then
pool_name="default"
fi
virsh pool-start "$pool_name"
;;
3)
# Deactivate a storage pool
read -ep "Enter the name of the storage pool to deactivate [default]: " pool_name
if [ -z "$pool_name" ]; then
pool_name="default"
fi
virsh pool-destroy "$pool_name"
;;
4)
# Create a new storage pool
read -ep "Enter the name of the new storage pool: " new_pool_name
read -ep "Enter the type of the new storage pool (e.g., dir, logical, fs): " pool_type
read -ep "Enter the target path or source for the new storage pool: " pool_source
virsh pool-define-as "$new_pool_name" "$pool_type" --target "$pool_source"
virsh pool-start "$new_pool_name"
virsh pool-autostart "$new_pool_name"
;;
5)
# Delete a storage pool
read -ep "Enter the name of the storage pool to delete: " delete_pool_name
virsh pool-info "$delete_pool_name" >> /dev/null
if [ $? == 0 ]; then
virsh pool-destroy "$delete_pool_name"
else
break
fi
virsh pool-undefine "$delete_pool_name"
if [ ! $? == 0 ]; then
break
fi
;;
6)
# Create a storage volume
read -ep "Enter the name of the storage pool to use [default]: " pool_name
if [ -z "$pool_name" ]; then
pool_name="default"
fi
read -ep "Enter the name of the new storage volume (e.g., new-vm): " volume_name
read -ep "Enter the size of the volume (e.g., 10G): " volume_capacity
virsh vol-create-as --pool "$pool_name" --name "$volume_name.qcow2" --capacity "$volume_capacity" --format qcow2
;;
7)
# Delete a storage volume
read -ep "Enter the storage pool name that the volume is under [default]: " pool_name
if [ -z "$pool_name" ]; then
pool_name="default"
fi
read -ep "Enter the name of the volume to delete (e.g., new-vm): " volume_name
# Delete the storage volume
virsh vol-delete --pool "$pool_name" "$volume_name.qcow2"
;;
8)
# Clone a storage volume
read -ep "Enter the name of the volume to clone (e.g., test-vm): " vm_name
read -ep "Enter the new volume name (e.g., new-test-vm): " new_vm_name
read -ep "Enter the storage pool name that the volume is under [default]: " pool_name
if [ -z "$pool_name" ]; then
pool_name="default"
fi
virsh vol-clone "$vm_name.qcow2" "$new_vm_name.qcow2" --pool "$pool_name"
;;
q)
# Back to Menu
break
;;
*)
echo "Invalid choice. Please enter a valid option."
;;
esac
done
;;
3)
# Networks Menu
while true; do
echo -e "\n============================================= Manage Network ============================================="
echo " s. Show all networks 1. Show more details of a network 2. Start a network"
echo " 3. Stop a network 4. Create a NAT network 5. Create a macvtap network"
echo " 6. Delete a network 7. Add a IPv4 reservation to a network 8. Remove a IPv4 reservation"
echo " 9. Add dhcpv6 to a network (auto) 10. Add dhcpv6 to a network (manual) 11. Add a IPv6 reservation to a network"
echo "12. Edit a network q. Back to main menu"
echo ""
read -ep "Enter your choice: " network_manage_choice
case $network_manage_choice in
s)
# List all networks
virsh net-list --all
;;
1)
# Show details of a network
read -ep "Enter the network name [default]: " network_name
if [ -z "$network_name" ]; then
network_name="default"
fi
virsh net-info "$network_name"
virsh net-dhcp-leases "$network_name"
;;
2)
# Start a network
read -ep "Enter the name of the network to start [default]: " network_name
if [ -z "$network_name" ]; then
network_name="default"
fi
virsh net-start "$network_name"
virsh net-autostart "$network_name"
;;
3)
# Stop a network
read -ep "Enter the name of the network to stop [default]: " network_name
if [ -z "$network_name" ]; then
network_name="default"
fi
virsh net-destroy "$network_name"
;;
4)
# Prompt user for NAT network configuration
read -ep "Enter the new network name (e.g., natbr0): " network_name
read -ep "Enter the virtual bridge name (e.g., natbr0): " bridge_name
read -ep "Enter the new gateway ip address (e.g., 192.168.100.1): " network_ip
read -ep "Enter the new subnet mask (e.g., 255.255.255.0): " netmask
read -ep "Enter the starting ip for the DHCP range (e.g., 192.168.100.2): " dhcp_start
read -ep "Enter the ending ip for the DHCP range (e.g., 192.168.100.254): " dhcp_end
# Create network XML file
network_xml="
<network>
<name>${network_name}</name>
<forward mode='nat'/>
<bridge name='${bridge_name}'/>
<ip address='${network_ip}' netmask='${netmask}'>
<dhcp>
<range start='${dhcp_start}' end='${dhcp_end}'/>
</dhcp>
</ip>
</network>"
# Save the network XML to a file
net_xml_file="/etc/libvirt/qemu/networks/$network_name.xml"
echo "${network_xml}" > "${net_xml_file}"
# Define and start network
virsh net-define "${net_xml_file}"
virsh net-start "${network_name}"
virsh net-autostart "${network_name}"
;;
5)
# Prompt user for macvtap network configuration
read -ep "Enter the new network name: " network_name
read -ep "Enter the physical network interface to attach: " int_name
network_xml="
<network>
<name>$network_name</name>
<forward mode='bridge'>
<interface dev='$int_name'/>
</forward>
</network>"
net_xml_file="/etc/libvirt/qemu/networks/$network_name.xml"
echo "${network_xml}" > "${net_xml_file}"
# Define and start network
virsh net-define "${net_xml_file}"
virsh net-start "${network_name}"
virsh net-autostart "${network_name}"
;;
6)
# Delete a network
bash bashvm-delete-network.sh
;;
7)
# Add a dhcpv4 reservation to a network
read -ep "Enter the virtual machines name: " vm_name
read -ep "Enter the virtual machines mac address: " vm_mac
read -ep "Enter the new ip address for the virtual machine: " vm_ip
read -ep "Enter the network name [default]: " vm_net
if [ -z "$vm_net" ]; then
vm_net="default"
fi
echo "Setting DHCP reservation..."
virsh net-update "$vm_net" add ip-dhcp-host "<host mac='$vm_mac' name='$vm_name' ip='$vm_ip' />" --live --config
if [ ! $? == 0 ]; then
echo "Failed to set DHCP reservation in $vm_net"
else
echo "You may need to start / stop the vm for the changes to take effect"
fi
;;
8)
# Remove a dhcpv4 reservation
read -ep "Enter the VM name: " vm_name
read -ep "Enter the network name [default]: " net_name
if [ -z "$net_name" ]; then
net_name="default"
fi
echo "Removing DHCP reservation..."
vm_mac=$(virsh net-dumpxml "$net_name" | grep "$vm_name" | head -n 1 | awk '{print $2}'| cut -d"'" -f2)
vm_ip=$(virsh net-dumpxml "$net_name" | grep "$vm_name" | head -n 1 | awk '{print $4}'| cut -d"'" -f2)
virsh net-update "$net_name" delete ip-dhcp-host "<host mac='$vm_mac' name='$vm_name' ip='$vm_ip' />" --live --config
if [ ! $? == 0 ]; then
echo "Failed to remove DHCP reservation from $net_name"
else
echo "You may need to start / stop the vm for the changes to take effect"
fi
;;
9)
# Add dhcpv6 to a network (auto)
bash bashvm-dhcpv6-network-auto.sh
;;
10)
# Add dhcpv6 to a network (manual)
bash bashvm-dhcpv6-network-manual.sh
;;
11)
# Add a dhcpv6 reservation to a network
read -ep "Enter the vm name you are assigning a IPv6 address to: " vm_name
read -ep "Enter the desired IPv6 address to assign the vm (e.g., xxxx::3): " net_address
read -ep "Enter the network name [default]: " net_name
if [ -z "$net_name" ]; then
net_name="default"
fi
echo "Setting DHCP reservation..."
virsh net-update "$net_name" add-last ip-dhcp-host "<host name='$vm_name' ip='$net_address'/>" --live --config --parent-index 1
if [ ! $? == 0 ]; then
echo "Failed to set DHCP reservation in $net_name"
else
echo "You may need to restart the vm for the changes to take effect"
fi
;;
12)
# Edit a network
read -ep "Enter the network name [default]: " net_name
if [ -z "$net_name" ]; then
net_name="default"
fi
virsh net-edit "$net_name"
;;
q)
# Back to Menu
break
;;
*)
echo "Invalid choice. Please enter a valid option."
;;
esac
done
;;
4)
# Managing a snapshot
while true; do
echo -e "\n========================= Manage Snapshot ========================="
echo "s. Show all snapshots of a VM 1. Create a snapshot 2. Delete a snapshot"
echo "3. Revert to a snapshot q. Back to main menu"
echo ""
read -ep "Enter your choice: " snapshot_manage_choice
case $snapshot_manage_choice in
s)
# List all snapshots of a virtual machine
read -ep "Enter the name of the virtual machine: " vm_name
virsh snapshot-list "$vm_name"
;;
1)
# Create a snapshot of a virtual machine
read -ep "Enter the name of the virtual machine: " vm_name
virsh snapshot-list "$vm_name"
if [ ! $? == 0 ]; then
break
fi
read -ep "Enter the name for the new snapshot: " snapshot_name
virsh snapshot-create-as "$vm_name" "$snapshot_name"
;;
2)
# Delete a snapshot of a virtual machine
read -ep "Enter the name of the virtual machine: " vm_name
virsh snapshot-list "$vm_name"
if [ ! $? == 0 ]; then
break
fi
read -ep "Enter the name of the snapshot to delete: " snapshot_name
virsh snapshot-delete "$vm_name" "$snapshot_name"
;;
3)
# Revert to a snapshot of a virtual machine
read -ep "Enter the name of the virtual machine: " vm_name
virsh snapshot-list "$vm_name"
if [ ! $? == 0 ]; then
break
fi
read -ep "Enter the name of the snapshot to revert to: " snapshot_name
virsh snapshot-revert "$vm_name" "$snapshot_name"
if [ ! $? == 0 ]; then
echo "Failed to revert snapshot ""$snapshot_name"""
break
fi
;;
q)
# Back to main menu
break
;;
*)
echo "Invalid choice. Please enter a valid option."
;;
esac
done
;;
5)
# Edit Properties
while true; do
echo -e "\n====================== Edit Properties ======================"
echo "1. Edit a VM 2. Edit a storage pool 3. Edit a network"
echo "4. Edit a snapshot q. Back to main menu"
echo ""
echo ""
read -ep "Enter your choice: " xml_manage_choice
case $xml_manage_choice in
1)
# edit a vm
read -ep "Enter the VM name: " vm_name
virsh edit "$vm_name"
;;
2)
# edit a storage pool
read -ep "Enter the storage pool name [default]: " pool_name
if [ -z "$pool_name" ]; then
pool_name="default"
fi
virsh pool-edit "$pool_name"
;;
3)
# edit a network
read -ep "Enter the network name [default]: " net_name
if [ -z "$net_name" ]; then
net_name="default"
fi
virsh net-edit "$net_name"
;;
4)
# edit a snapshot
read -ep "Enter the VM name: " vm_name
read -ep "Enter the snapshot name: " snap_name
virsh snapshot-edit --snapshotname "$snap_name" --domain "$vm_name"
;;
q)
# Back to Main Menu
break
;;
*)
echo "Invalid choice. Please enter a valid option."
;;
esac
done
;;
6)
# Firewall Settings
while true; do
echo -e "\n===================== Firewall Settings ====================="
echo "s. Show ufw status 1. Show listening ports 2. Allow port range"
echo "3. Deny port range 4. Allow single port 5. Deny single port"
echo "6. Delete a rule 7. Enable and reload ufw 8. Disable and reset ufw"
echo "q. Back to main menu"
echo ""
read -ep "Enter your choice: " firewall_choice
case $firewall_choice in
s)
# Show ufw status
ufw status numbered
;;
1)
# Show listening ports
netstat -l | grep "tcp\|udp"
;;
2)
# Allow port range
read -ep "Enter starting port: " port_start
read -ep "Enter ending port: " port_end
ufw allow "$port_start":"$port_end"/tcp
ufw allow "$port_start":"$port_end"/udp
ufw reload
;;
3)
# Deny Port range
read -ep "Enter starting port: " port_start
read -ep "Enter ending port: " port_end
ufw deny "$port_start":"$port_end"/tcp
ufw deny "$port_start":"$port_end"/udp
ufw reload
;;
4)
# Allow single port
read -ep "Enter the port number: " port
ufw allow "$port"
ufw reload
;;
5)
# Deny single port
read -ep "Enter the port number: " port
ufw deny "$port"
ufw reload
;;
6)
# Delete a rule
read -ep "Enter the rule number to delete: " rule_number
ufw delete "$rule_number"
ufw reload
;;
7)
# ufw enable and reload
ufw enable
ufw reload
;;
8)
# ufw disable and reset
ufw disable
ufw reset
;;
q)
# Back to Main Menu
break
;;
*)
echo "Invalid choice. Please enter a valid option."
;;
esac
done
;;
7)
# Manage Port forwarding
while true; do
echo -e "\n==================================== Manage Port Forwarding ===================================="
echo "s. Show port forwarding rules 1. List DHCP leases from a network 2. Add port forwarding to a VM"
echo "3. Remove port forwarding from a VM 4. Edit port forwarding rule file q. Back to main menu"
echo ""
read -ep "Enter your choice: " port_choice
case $port_choice in
s)
# Show port forwarding ruless
iptables -t nat -L -n -v
echo ""
bash bashvm-show-port-forwarding.sh
;;
1)
# List DHCP leases
read -ep "Enter the network name [default]: " network_name
if [ -z "$network_name" ]; then
network_name="default"
fi
virsh net-dhcp-leases "$network_name"
;;
2)
# Add port forwarding rules to a VM behind a NAT
bash bashvm-add-port-forwarding.sh
;;
3)
# Delete port forwarding rules of vm
bash bashvm-remove-port-forwarding.sh
;;
4)
# Edit port forwarding rules
nano /etc/libvirt/hooks/qemu || vim /etc/libvirt/hooks/qemu
;;
q)
# Back to Main Menu
break
;;
*)
echo "Invalid choice. Please enter a valid option."
;;
esac
done
;;
8)
# VNC / Console Access
while true; do
echo -e "\n======================== VNC / Console Access ========================"
echo "s. Show listening ports 1. Add VNC port with password 2. Remove VNC port"
echo "3. Console into a vm q. Back to main menu"
echo ""
read -ep "Enter your choice: " vnc_manage_choice
case $vnc_manage_choice in
s)
# Show listening ports
netstat -l | grep "tcp\|udp"
;;
1)
# Add vnc access with password
read -ep "Enter the name of the virtual machine (e.g., vm1): " vm_name
read -ep "Enter a VNC password to use (e.g., pass123): " vnc_pass
add_vnc=" <channel type='unix'>
<target type='virtio' name='org.qemu.guest_agent.0'/>
<address type='virtio-serial' controller='0' bus='0' port='1'/>
</channel>
<input type='tablet' bus='usb'>
<address type='usb' bus='0' port='1'/>
</input>
<input type='mouse' bus='ps2'/>
<input type='keyboard' bus='ps2'/>
<graphics type='vnc' port='-1' autoport='yes' listen='0.0.0.0' passwd='"$vnc_pass"'>
<listen type='address' address='0.0.0.0'/>
</graphics>
<sound model='ich9'>
<address type='pci' domain='0x0000' bus='0x00' slot='0x1b' function='0x0'/>
</sound>
<audio id='1' type='none'/>
<video>
<model type='qxl' ram='65536' vram='65536' vgamem='16384' heads='1' primary='yes'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x0'/>
</video>
<memballoon model='virtio'>
<address type='pci' domain='0x0000' bus='0x05' slot='0x00' function='0x0'/>
</memballoon>
<rng model='virtio'>
<backend model='random'>/dev/urandom</backend>
<address type='pci' domain='0x0000' bus='0x06' slot='0x00' function='0x0'/>
</rng>
</devices>
</domain>"
virsh dumpxml "$vm_name" | sed -n '/console/q;p' > "$vm_name".xml
echo "$add_vnc" >> "$vm_name".xml
virsh define "$vm_name".xml
rm "$vm_name".xml
echo "Please shutdown then start the vm for the changes to take effect"
;;
2)
# Remove VNC Port
read -ep "Enter the name of the virtual machine: " vm_name
remove_vnc=" <channel type='unix'>
<target type='virtio' name='org.qemu.guest_agent.0'/>
<address type='virtio-serial' controller='0' bus='0' port='1'/>
</channel>
<input type='tablet' bus='usb'>
<address type='usb' bus='0' port='1'/>
</input>
<input type='mouse' bus='ps2'/>
<input type='keyboard' bus='ps2'/>
<sound model='ich9'>
<address type='pci' domain='0x0000' bus='0x00' slot='0x1b' function='0x0'/>
</sound>
<audio id='1' type='none'/>
<video>
<model type='qxl' ram='65536' vram='65536' vgamem='16384' heads='1' primary='yes'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x0'/>
</video>
<memballoon model='virtio'>
<address type='pci' domain='0x0000' bus='0x05' slot='0x00' function='0x0'/>
</memballoon>
<rng model='virtio'>
<backend model='random'>/dev/urandom</backend>
<address type='pci' domain='0x0000' bus='0x06' slot='0x00' function='0x0'/>
</rng>
</devices>
</domain>"
virsh dumpxml "$vm_name" | sed -n '/console/q;p' > "$vm_name".xml
echo "$remove_vnc" >> "$vm_name".xml
virsh define "$vm_name".xml
rm "$vm_name".xml
echo "Please shutdown then start the vm for the changes to take effect"
;;
3)
# Console into a VM
read -ep "Enter the VM name to console into: " hostname
virsh console "$hostname"
;;
q)
# Back to Main Menu
break
;;
*)
echo "Invalid choice. Please enter a valid option."
;;
esac
done
;;
9)
# System Monitor
btop
;;
10)
# Manage Port forwarding
while true; do
echo -e "\n==================================== VM Monitor ===================================="
echo "s. Show all virtual machines 1. VCPU usage of a VM 2. Memory usage of a VM"
echo "3. Disk usage of a VM 4. Network usage of a VM 5. All usage metrics of a VM"
echo "q. Back to main menu"
echo ""
read -ep "Enter your choice: " port_choice
case $port_choice in
s)
# Show all virtual machines
virsh list --all
;;
1)
read -ep "Enter the name of the VM: " vm_name
vm_check=$(virsh dominfo "$vm_name")
if [ ! $? == 0 ];then
break
fi
# Setting the vcpu core count
cpu_count=$(virsh dominfo $vm_name | grep "CPU(s)" | awk '{print $2}')
# Counting starts at 0 so take away 1
cpu_count=$(( $cpu_count - 1 ))
# Loop through each core to output the usage
for ((i = 0; i <= $cpu_count; i++)); do
# Begin init time of vcpu
cpu_time_1=$(virsh domstats $vm_name | grep "vcpu.$i.time" | cut -d= -f2)
# Sleep
sleep 1
# End of init time of vcpu
cpu_time_2=$(virsh domstats $vm_name | grep "vcpu.$i.time" | cut -d= -f2)
# Delta is to be equal of time between recordings
delta_t=1
# Calculate the difference in CPU time (nanoseconds)
delta_cpu_time=$((cpu_time_2 - cpu_time_1))
# Normalize CPU usage as a percentage of total time available
cpu_usage=$(echo "scale=2; ($delta_cpu_time / ($delta_t * 1000000000)) * 100" | bc)
printf "CPU %d Usage: %.2f%%\n" "$i" "$cpu_usage"
done
;;
2)
read -ep "Enter the name of the VM: " vm_name
vm_check=$(virsh dominfo "$vm_name")
if [ ! $? == 0 ];then
break
fi
# Set the memory reported by the guest as being actively used
mem_rss=$(virsh domstats $vm_name | grep "balloon.rss" | cut -d= -f2)
# Set the memory reported by the guest as being available
mem_ava=$(virsh domstats $vm_name | grep "balloon.available" | cut -d= -f2)
# Calculate the usage percentage
memory_usage=$(echo "scale=2; ($mem_rss / ($mem_rss + $mem_ava)) * 100" | bc)
echo "Memory Usage: $memory_usage%"
;;
3)
#Disk usage
read -ep "Enter the name of the VM: " vm_name
vm_check=$(virsh dominfo "$vm_name")
if [ ! $? == 0 ];then
break
fi
disk=$(virsh domblklist $vm_name | grep v | awk '{print $1}')
# Set the total allocated disk space
disk_total=$(virsh guestinfo $vm_name | grep fs.0 | grep "total" | cut -d: -f2)
# Set the used disk space
disk_used=$(virsh guestinfo $vm_name | grep fs.0 | grep "used" | cut -d: -f2)
# Calculate the percentage value of the used disk space
disk_usage=$(echo "scale=2; ($disk_used / $disk_total) * 100" | bc)
echo "Disk Usage: $disk_usage%"
;;
4)
read -ep "Enter the name of the VM: " vm_name
vm_check=$(virsh dominfo "$vm_name")
if [ ! $? == 0 ];then
break
fi
# Show the virtual interface assigned to the vm and output the usage
interface=$(virsh domiflist $vm_name | grep v | awk '{print $1}')
ifstat -i $interface 1 1
;;
5)
#show all metrics
bash bashvm-monitor.sh
;;
q)
# Back to Main Menu
break
;;
*)
echo "Invalid choice. Please enter a valid option."
;;
esac
done
;;
q)
# Exit the script
echo "Exiting."
exit 0
;;
*)
echo "Invalid choice. Please enter a valid option."
;;
esac
done